Shipping wedge for end effector installation onto surgical devices

ABSTRACT

Shipping wedges for installing end effectors onto an endoscopic assembly of a surgical tack applier are provided. In aspects, a shipping wedge includes an elongate body extending along a longitudinal axis and defining a channel therethrough, and an arm disposed within a slot defined in a side wall of the elongate body. The arm includes a first end coupled to the side wall and a second end that is movable laterally with respect to the side wall. In aspects, a shipping wedge includes an elongate body extending along a longitudinal axis and defining a channel therethrough. A proximal portion of the elongate body includes a first arm extending proximally from a distal portion of the elongate body and a locking tab extending laterally into the channel of the elongate body.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a divisional of U.S. patent application Ser. No. 16/279,180, filed Feb. 19, 2019, which claims the benefit of and priority to U.S. Provisional Patent Application No. 62/665,548, filed May 2, 2018, the entire disclosure of each of which is incorporated by reference herein.

TECHNICAL FIELD

The present disclosure relates to surgical devices and methods of using the same. More specifically, the present disclosure relates to shipping wedges for installing end effectors onto surgical fastener applying devices.

BACKGROUND

Various surgical procedures require devices capable of applying fasteners to tissue to form tissue connections or to secure objects to tissue. Minimally invasive, e.g., endoscopic or laparoscopic, surgical procedures are currently available to form these tissue connections or to secure objects to tissue. Laparoscopic and endoscopic procedures generally utilize long and narrow instruments capable of reaching remote regions within the body and are configured to form a seal with the incision or tube they are inserted through. Additionally, the devices are typically capable of being actuated remotely, that is, from outside the body.

During hernia repair, for example, it is often desirable to fasten a mesh to body tissue. Minimally invasive surgical techniques for hernia repair utilize surgical fasteners, e.g., surgical tacks, staples, and/or clips, to secure the mesh to the tissue to provide reinforcement and structure for encouraging tissue ingrowth. Surgical fasteners are often applied through an elongated device, such as a surgical fastener applying apparatus, for delivery to the mesh, and are manipulated from outside a body cavity.

Some surgical fastener applying apparatus include a reusable handle or actuator section and a removable and/or replaceable end effector that includes the surgical fasteners. The end effector may be provided with a safety device or shipping wedge during shipment and/or prior to use. Typically, the shipping wedge is removed after the end effector is installed onto the reusable handle. However, in some instances, the shipping wedge can be removed from the end effector prior to the end effector being assembled with the reusable handle. It would be desirable to provide shipping wedges that can facilitate the proper loading of an end effector onto a reusable handle.

SUMMARY

In accordance with an aspect of the present disclosure, a shipping wedge includes an elongated body extending along a longitudinal axis and defining a channel therethrough, and an arm disposed within a slot formed in a side wall of the elongate body. The arm includes a first end coupled to the side wall and a second end that is movable laterally with respect to the side wall.

The shipping wedge may include a handle extending transversely from the elongate body. The arm may include a projection extending from an inner surface of the arm. In some aspects, the projection of the arm includes a first surface extending laterally into the channel of the elongate body and/or a cam ramp tapering distally towards the inner surface of the arm. The shipping wedge may include a pair of guide walls extending transversely from the elongate body in substantially parallel and spaced relation relative to each other on opposed sides of the slot of the side wall. The elongate body of the shipping wedge may include a proximal portion defining a circumferential wall.

In accordance with another aspect of the present disclosure, a shipping wedge includes an elongate body extending along a longitudinal axis and defining a channel therethrough. A proximal portion of the elongate body includes a first arm extending proximally from a distal portion of the elongate body and a locking tab extending laterally into the channel of the elongate body.

In some aspects, the elongate body further includes a second arm disposed in spaced relation relative to the first arm. The locking tab may be secured to and extend from the second arm. The first arm may be biased to extend along an axis that is disposed at an angle with respect to the longitudinal axis of the elongate body and the second arm may be biased to extend along an axis that is substantially parallel to the longitudinal axis. The first arm may be movable to a deflected position extending along an axis substantially parallel to the longitudinal axis.

The first arm may include a pair of fingers extending laterally towards the second arm. The pair of fingers may be disposed in spaced relation relative to each other and define a slot therebetween. The locking tab may extend into the slot. When the first arm is disposed in the deflected position, the pair of fingers may press against and move the second arm to a deflected position extending along an axis that is disposed at an angle with respect to the longitudinal axis.

In some aspects, the first arm is biased to extend along an axis that is substantially parallel to the longitudinal axis. The first arm may include a latch extending from an inner surface of the first arm. The latch may include a first surface extending laterally into the channel of the elongate body and a cam ramp tapering from the first surface proximally towards the inner surface of the first arm. The first arm may include a slit defined therethrough and the locking tab may be positioned through the slit and slidably movable therein between a first position in which a first end of the locking tab is disposed within the channel of the elongate body and a second position in which the first end of the locking tab is disposed within the slit. The locking tab may include a second end extending laterally outward of the first arm. The second end may define a pull tab for moving the locking tab between the first and second positions.

Other aspects, features, and advantages will be apparent from the description, the drawings, and the claims that follow.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description given below, serve to explain the principles of the disclosure, wherein:

FIG. 1 is a perspective view of an endoscopic surgical device in accordance with an embodiment of the present disclosure;

FIG. 2 is a longitudinal, cross-sectional view of the endoscopic surgical device of FIG. 1 ;

FIG. 3 is a rear, perspective view, with a first housing half-section removed therefrom, of a handle assembly of the endoscopic surgical device of FIG. 1 ;

FIG. 4 is a front, perspective view, with a second housing half-section removed therefrom, of a handle assembly of the endoscopic surgical device of FIG. 1 ;

FIG. 5 is an enlarged view of the indicated area of detail of FIG. 2 ;

FIG. 6 is a cross-sectional view as taken through 6-6 of FIG. 5 , illustrating a button of a handle housing of the endoscopic surgical device in a first position;

FIG. 7 is a cross-sectional view as taken through 7-7 of FIG. 5 ;

FIG. 8 is a cross-sectional view as taken through 8-8 of FIG. 5 , illustrating a button of a handle housing of the endoscopic surgical device in a second position;

FIG. 9 is a cross-sectional view as taken through 9-9 of FIG. 5 ;

FIG. 10 is a perspective view of a button and a slider of a handle housing of the endoscopic surgical device of FIG. 1 ;

FIG. 11 is an enlarged view of the handle assembly shown in FIG. 4 , illustrating an operation of a slider;

FIG. 12 is a perspective view, with parts separated, of an endoscopic assembly of the endoscopic surgical device of FIG. 1 ;

FIG. 13 is a cross-sectional view of a distal portion of the endoscopic surgical device of FIG. 1 , as taken through 13-13 of FIG. 2 ;

FIG. 14 is an enlarged view of the indicated area of detail of FIG. 13 ;

FIG. 15 is a longitudinal, cross-sectional view of an end effector and an endoscopic assembly of the endoscopic surgical device of FIG. 1 , illustrating the end effector decoupled from the endoscopic assembly;

FIG. 16 is a longitudinal, cross-sectional view of the end effector and the endoscopic assembly of the endoscopic surgical device of FIG. 1 , illustrating the end effector decoupled from the endoscopic assembly;

FIG. 17 is an enlarged view of an end effector and a distal end portion of an endoscopic assembly of the endoscopic surgical device of FIG. 1 ;

FIG. 18 is a perspective view of the distal end portion of the endoscopic surgical device of FIG. 1 , with an end effector shown separated therefrom;

FIG. 19 is a perspective view of the end effector of FIG. 18 , with an outer tube separated therefrom;

FIG. 20 is a perspective view of the end effector of FIG. 18 , with an outer tube removed therefrom and with parts separated;

FIG. 21 is a perspective view of an inner tube of the end effector of FIG. 18 , with a plurality of anchors shown separated therefrom;

FIG. 22 is a perspective view of a shipping wedge in accordance with an embodiment of the present disclosure, installed on an end effector;

FIG. 23 is a side view of the shipping wedge of FIG. 22 ;

FIG. 24 is an enlarged view of a proximal portion of an arm of the shipping wedge shown in FIG. 23 ;

FIG. 25 is a cross-sectional view of the shipping wedge and the end effector of FIG. 22 ;

FIG. 26 is a rear, perspective view of a shipping wedge in accordance with another embodiment of the present disclosure;

FIG. 27 is a rear, perspective view of the shipping wedge of FIG. 26 , installed on an end effector;

FIG. 28 is a cross-sectional view of the shipping wedge and the end effector of FIG. 27 , illustrating the shipping wedge in a locked configuration;

FIG. 29 is a rear, perspective view of the shipping wedge and the end effector of FIG. 27 , illustrating the shipping wedge in an unlocked configuration;

FIG. 30 is a cross-sectional view of the shipping wedge and the end effector of FIG. 27 , illustrating the shipping wedge in a locked configuration during installation on an endoscopic assembly of the endoscopic surgical device of FIG. 1 ;

FIG. 31 is a cross-sectional view of the shipping wedge and the end effector of FIG. 27 , illustrating the shipping wedge in an unlocked configuration during installation on an endoscopic assembly of the endoscopic surgical device of FIG. 1 ;

FIG. 32 is a rear, perspective view of a shipping wedge in accordance with yet another embodiment of the present disclosure, installed on an end effector;

FIG. 33 is a cross-sectional view of the shipping wedge and the end effector of FIG. 32 , illustrating the shipping wedge in a locked configuration during installation on an endoscopic assembly of the endoscopic surgical device of FIG. 1 ; and

FIG. 34 is a cross-sectional view of the shipping wedge and the end effector of FIG. 32 , illustrating the shipping wedge in an unlocked configuration during installation on an endoscopic assembly of the endoscopic surgical device of FIG. 1 .

DETAILED DESCRIPTION

Embodiments of the presently disclosed devices are described in detail with reference to the drawings, in which like reference numerals designate identical or corresponding elements in each of the several views. As used herein, the term “distal” refers to that portion of a system, a device, or a component thereof that is farther from a user, while the term “proximal” refers to that portion of the system, the device, or the component thereof that is closer to the user.

Non-limiting examples of endoscopic surgical devices according to the present disclosure include manual, mechanical and/or electromechanical surgical tack appliers (e.g., tackers) and the like. For a more detailed description of endoscopic surgical devices and components thereof that can be used with, or adapted for use with, a shipping wedge of the present disclosure, reference can be made to U.S. Patent Appl. Pub. Nos. 2016/0166255 and 2016/0270835, the entire content of each of which is hereby incorporated by reference herein.

Referring now to FIGS. 1 and 2 , an exemplary endoscopic surgical device, in the form of an endoscope surgical tack applier or tacker, is shown generally as 100. The surgical tack applier 100 includes a handle assembly 110 and an endoscopic or anchor retaining/advancing assembly 150 extending from the handle assembly 110 along a longitudinal axis “X”. An end effector 200 is selectively detachable/attachable from/to the endoscopic assembly 150.

The handle assembly 110 includes a handle housing 112 formed from a first half-section 112 a and a second half section 112 b joined to one another. The handle assembly 110 includes a trigger 114 pivotably connected to the handle housing 112 and a biasing member 116 disposed within the handle housing 112 that is configured to maintain the trigger 114 in an extended or un-actuated position and to have a spring constant sufficient to return the trigger 114 to the un-actuated position after a driving or firing stroke.

As shown in FIGS. 3 and 4 , the trigger 114 defines a gear rack 114 a formed thereon that is configured for operative engagement with a pinion gear 118 rotatably supported in the handle housing 112. The handle assembly 110 further includes a first bevel gear 120 disposed within the handle housing 112 that is operatively engaged/associated with the pinion gear 118 and a second or pinion-bevel gear 122 operatively engaged or meshed with the first bevel gear 120. The pinion-bevel gear 122 is secured to a proximal end of an inner shaft assembly 158 of the endoscopic assembly 150.

In use, upon squeezing of the trigger 114, the gear rack 114 a thereof causes the pinion gear 118 to rotate in a first direction. Rotation of the pinion gear 118 in the first direction results in rotation of the first bevel gear 120 in a first direction and, in turn, rotation of the pinion-bevel gear 122 in a first direction. As the pinion-bevel gear 122 is rotated in the first direction, the pinion-bevel gear 122 transmits the rotation to the inner shaft assembly 158 of the endoscopic assembly 150.

The handle assembly 110 is further provided with a timing system 123 that prevents the trigger 114 from returning to the un-actuated position if the trigger 114 is released after a partial squeeze, and a ratchet mechanism 124 that inhibits or prevents the inner shaft assembly 158 from backing-out or reversing after an anchor or fastener 240 (see e.g., FIG. 2 ) of the end effector 200 has been at least partially driven into tissue.

As shown in FIGS. 1-3 and 5 , the handle assembly 110 includes an articulation knob 126 rotatably supported on the handle housing 112. The articulation knob 126 defines an inner helical thread 126 a that meshingly receives or engages an outer thread 128 a of a connection nut 128 that is non-rotatably connected to a proximal tube portion 156 a of an inner articulation tube assembly 156 of the endoscopic assembly 150. Rotation of the articulation knob 126 in first or second directions results in articulating or straightening of the endoscopic assembly 150.

As shown in FIGS. 1-5 , the handle assembly 110 includes a button 130 supported on the handle housing 112. The button 130 is configured to permit and inhibit actuation of the trigger 114, and to effectuate a loading/retention and a release/removal of an end effector 200 to the endoscopic assembly 150. The button 130 includes a pin 132 slidably supported in the handle housing 112 and oriented in a direction orthogonal to the longitudinal axis “X” of the endoscopic assembly 150. The pin 132 has a length such that when the button 130 is in a first position, as shown in FIGS. 6 and 7 , a first end of the pin 132 extends from a first side of handle housing 112, and when the button 130 is in a second position, as shown in FIGS. 8 and 9 , a second end of the pin 132 extends from a second side of handle housing 112.

With reference now to FIGS. 6-11 , the button 130 includes a plate 134 supported on and connected to the pin 132. The plate 134 defines an elongate slot 134 a therein, through which a stem 122 a of the pinion-bevel gear 122 extends. The elongate slot 134 a of plate 134 defines a major axis which is parallel relative to the longitudinal axis of the pin 132. In use, as the pin 132 is moved between the first position and the second position, the plate 134 is moved between respective first and second positions.

The button 130 further includes a first detent or recess 136 a defined in the plate 134 that is engaged by a biasing member 138 (e.g., a plunger spring or torsion spring) when the button 130 is in the first position, and a second detent or recess 136 b defined in the plate 134 that is engaged by the biasing member 138 when the button 130 is in the second position. The engagement of the biasing member 138 in either the first detent 136 a or the second detent 136 b of the button 130 functions to help maintain the button 130 in either the first or second position.

The button 130 also includes a first wall 130 a extending from the plate 134, and a second wall 130 b extending from the plate 134. In use, when the button 130 is in the first position, the first wall 130 a thereof blocks or inhibits movement of a load/release slider 140, and when the button 130 is in the second position, the first wall 130 a thereof permits movement of load/release slider 140. Similarly, in use, when the button 130 is in the second position (only achievable when the trigger 114 is in a fully un-actuated or home position), the second wall 130 b thereof blocks or inhibits actuation of the trigger 114 by the second wall 130 b extending into a notch 114 b of the trigger 114; and when the button 130 is in the first position, the second wall 130 b is clear of the notch 114 b of the trigger 114 to permit actuation of the trigger 114.

With continued reference to FIGS. 6-11 , the handle assembly 110 includes a load/release slider 140 (also referred to herein as a slider) slidably supported on the handle housing 112. The slider 140 is configured to effectuate a loading/retention and a release/removal of an end effector 200 (see e.g., FIG. 1 ), in the form of a single use loading unit (SULU) or disposable loading unit (DLU), as will be discussed in greater detail below. The slider 140 includes a first stem 140 a extending proximally therefrom and towards button 130. Specifically, the first stem 140 a of the slider 140 is in axial registration with the first wall 130 a extending from the plate 134 of the button 130 when the button 130 is in the first position (see e.g., FIG. 7 ), and out of axial registration with the first wall 130 a of the button 130 when the button 130 is in the second position (see e.g., FIG. 9 ).

The slider 140 further includes a second stem 140 b extending therefrom in a direction toward the inner shaft assembly 158 of the endoscopic assembly 150. As shown in FIG. 11 , the inner shaft assembly 158 supports a pair of axially spaced apart proximal and distal radial flanges 158 d, 158 e which bookend the second stem 140 b of the slider 140.

In use, when the button 130 is in the second position (wherein trigger 114 is locked in the fully un-actuated position) such that the first stem 140 a of the slider 140 is out of axial registration with the first wall 130 a of the button 130, the slider 140 is free to move between a first or distal position and a second or proximal position. As the slider 140 is moved from the first position to the second position thereof, the second stem 140 b of the slider 140 exerts a force on the proximal radial flange 158 d of the inner shaft assembly 158 to urge the inner shaft assembly 158 proximally from a respective first position to a respective second position. It follows that as the slider 140 is moved from the second position to the first position thereof, the second stem 140 b of the slider 140 exerts a force on the distal radial flange 158 e of the inner shaft assembly 158 to urge the inner shaft assembly 158 distally from the respective second position to the respective first position. The slider 140 may be biased in the first or distal portion by a biasing member 142.

Turning now to FIGS. 5 and 12-16 , the endoscopic assembly 150 includes an outer tube 152, an outer support tube assembly 154 disposed within outer tube 152, an inner articulation tube assembly 156, and an inner shaft assembly 158. The outer support tube assembly 154 includes a proximal support tube portion 154 a secured to and extending from the handle housing 112, and a distal support tube portion 154 b pivotally connected to the proximal support tube portion 154 a by a pivot pin 154 c at an articulation joint 160.

The distal support tube portion 154 b supports ball detents 162 in an outer surface thereof. The ball detents 162 function to selectively secure and retain an end effector 200 to the endoscopic assembly 150. In use, as will be discussed in greater detail below, the ball detents 162 are acted on by an outer camming surface/relief 158 c ₁ of a coupling member 158 c of the inner shaft assembly 158 to move the ball detents 162 radially outward when the inner shaft assembly 158 is in a distal position.

The inner articulation tube assembly 156 includes a proximal tube portion 156 a concentrically and slidably disposed within the proximal tube portion 154 a of the outer support tube assembly 154. A proximal end of the proximal tube portion 156 a is non-rotatably connected to the connection nut 128. The inner articulation tube assembly 156 further includes an articulation link 156 b having a proximal end pivotally connected to a distal end of the proximal tube portion 154 a, and a distal end pivotally connected to the distal tube portion 154 b of the outer support tube assembly 154. Upon axial translation of the proximal tube portion 156 a, for example, in a proximal direction due to rotation of the articulation knob 126 or a distal direction due to a distal movement of the slider 140, the proximal tube portion 156 a acts (e.g., pulls or pushes) on the articulation link 156 b to cause the articulation link 156 b to translate in a respective proximal or distal direction which, in turn, acts on the distal tube portion 154 b to cause the distal tube portion 154 b to pivot about a pivot axis of the pivot pin 154 c which, in turn, causes the end effector 200 to be moved to an articulated or non-articulated orientation relative to the longitudinal axis “X” of the endoscopic assembly 150.

With continued reference to FIGS. 5 and 12-16 , the inner shaft assembly 158 includes a proximal rigid shaft portion 158 a, a distal flexible shaft portion 158 b non-rotatably connected to and extending from a distal end of the proximal rigid shaft portion 158 a, and a coupling member 158 c non-rotatably connected to a distal end of the distal flexible shaft portion 158 b. The pinion-bevel gear 122 is non-rotatably connected to a proximal end of the proximal rigid shaft portion 158 a of the inner shaft assembly 158. The inner shaft assembly 158 is configured such that the distal flexible shaft portion 158 b extends across and beyond the articulation joint 160.

The coupling member 158 c is rotatably and slidably supported in the distal support tube portion 154 b of the outer support tube assembly 154 so as to accommodate and/or account for variations in length of the distal flexible shaft portion 158 b when the distal flexible shaft portion 158 b is in a flexed condition. The coupling member 158 c is substantially tongue shaped and extends in a distal direction distally from the distal support tube portion 154 b of the outer support tube assembly 154. The coupling member 158 c is configured for non-rotatable connection to an inner tube 230 of the end effector 200, as will be discussed in greater detail below.

The inner actuation shaft assembly 158 is configured to perform at least a pair of functions, a first function relating to the securing and release of an end effector 200 to the distal support tube portion 154 b of the outer support tube assembly 154 upon an axial translation thereof, and a second function relating to the firing of the anchors 240 from the end effector 200 when the end effector 200 is coupled to the distal tube portion 154 b of the outer support tube assembly 154 upon a rotation thereof.

Turning now to FIGS. 17 and 18 , the end effector 200, in the form of a SULU or DLU, is shown and will be described herein. The end effector 200, as mentioned above, is selectively connectable to the distal tube portion 154 b of the outer support tube assembly 154 of the endoscopic assembly 150.

The end effector 200 includes an outer tube 210 defining a lumen 210 a therethrough, and is configured and dimensioned (e.g., substantially rectangular or dog bone shaped) to receive the distal support tube portion 154 b and the coupling member 158 c of the endoscopic assembly 150 therein. The outer tube 210 defines a proximal key slot 210 b for engagement with a key 154 d formed in the distal tube portion 154 b of the outer support tube assembly 154. In use, when the end effector 200 is connected to the distal tube portion 154 b of the outer support tube assembly 154, the key slot 210 b and the key 154 d engage with one another to properly align the end effector 200 and the endoscopic assembly 150 to one another.

As shown in FIGS. 19 and 20 , the end effector 200 further includes a spiral or coil 220 fixedly disposed within a distal portion of the outer tube 210. A pair of axially spaced apart retention rings 222 a, 222 b is also fixedly disposed within the outer tube 210 at a location proximal of the coil 220.

The end effector 200 also includes an inner tube 230 rotatably disposed within the coil 220. The inner tube 230 defines a lumen therethrough, and includes a proximal end portion 230 a and a splined distal end portion 230 b. The proximal end portion 230 a of the inner tube 230 is configured and dimensioned to slidably receive the coupling member 158 c of the endoscopic assembly 150 therein. The inner tube 230 includes a plurality of retention tabs 230 c projecting radially outward therefrom and which snap beyond one of the pair of retention rings 222 a, 222 b, when the inner tube 230 is assembled with the outer tube 210. In this manner, the outer tube 210 and the inner tube 230 are axially fixed and yet rotatable relative to one another.

As shown in FIGS. 20 and 21 , the distal end portion 230 b of the inner tube 230 is slotted, defining a pair of tines 230 b ₁ and a pair of channels 230 b ₂. The distal end portion 230 b of the inner tube 230 is capable of accepting a plurality of anchors 240 within the inner tube 230. In particular, the anchors 240 are loaded into the end effector 200 such that a pair of opposing threaded sections 242 a, 242 b of the anchors 240 extend through respective channels 230 b ₂ of the distal end portion 230 b of the inner tube 230 and are slidably disposed within the groove of the coil 220, and the pair of tines 230 b ₁ of the distal end portion 230 b of the inner tube 230 are disposed within a pair of slotted sections 244 a, 244 b of the anchors 240. Each of the anchors 240 is loaded into the end effector 200 such that adjacent anchors 240 are not in contact with one another so as to not damage distal tips 246 of the anchors 240.

In an operation of the surgical tack applier 100, with the end effector 200 operatively connected to the distal support tube portion 154 b of the outer support tube assembly 154 of the endoscopic assembly 150 as shown, for example, in FIGS. 13 and 14 , as the inner shaft assembly 158 is rotated due to an actuation of the trigger 114, as described above, said rotation is transmitted to the inner tube 230 of the end effector 200 via the coupling member 158 c of the endoscopic assembly 150. As the inner tube 230 is rotated, about its longitudinal axis, with respect to the coil 220, the pair of tines 230 b ₁ of the inner tube 230 transmits the rotation to the anchors 240 and advances the anchors 240 distally owing to head threads 248 a, 248 b of the anchors 240 engaging with the coil 220.

A single complete and full actuation of the trigger 114 results in a firing of a single anchor 240 from the end effector 200. The surgical tacker 200 may be repeatedly fired to fire anchors 240 from the end effector 200 until the surgical procedure is complete or until the end effector 200 is spent of anchors 240. If the end effector 200 is spent of anchors 240, and if additional anchors 240 are required to complete the surgical procedure, the spent end effector 200 may be replaced with a new (e.g., loaded with anchors 240) end effector 200.

With reference again to FIGS. 2 and 5-16 , in order to prepare surgical tack applier 100 for receipt of the end effector 200 or to replace a spent end effector 200 with a new end effector 200, the button 130 of the handle assembly 110 is moved from the first position to the second position, as described above, such that the trigger 114 is prevented from actuation and the slider 140 is free to move. With the button 130 in the second position, the slider 140 is moved from the first position to the second position, as also described above. As the slider 140 is moved to the second position, the second stem 140 b of the slider 140 exerts a force on the proximal radial flange 158 d of the inner shaft assembly 158 to urge the inner shaft assembly 158, and in turn the coupling member 158 c thereof, proximally from a respective first position to a respective second position. As the coupling member 158 c is moved from the first position to the second position, the ball detents 162 are free to drop or move radially inward of the outer tube 152 as the outer camming surface/relief 158 c ₁ of the coupling member 158 c is moved into axial registration with the ball detents 162. With the ball detents 162 free to drop or move radially inward, the end effector 200 may be fully coupled to the distal support tube portion 154 b of the endoscopic assembly 150.

Once again, as mentioned above, as so configured and operable, the end effector 200 may only be removed and replaced when trigger 114 is in the fully un-actuated, home and locked position. As such, the end effector 200 cannot be removed or replaced or loaded while the trigger 114 is in a short-stroked condition (e.g., partially actuated).

With a new end effector 200 fully coupled to distal support tube portion 154 b of the endoscopic assembly 150, the slider 140 is moved from the second position to the first position to secure or lock the end effector 200 to the distal support tube portion 154 b of the endoscopic assembly 150. In particular, as the slider 140 is moved to the first position, the second stem 140 b of the slider 140 exerts a force on the distal radial flange 158 e of the inner shaft assembly 158 to urge the inner shaft assembly 158, and in turn the coupling member 158 c thereof, distally from the second position to the first position. As the coupling member 158 c is moved from the second position to the first position, the ball detents 162 are urged by outer the camming surface/relief 158 c ₁ of the coupling member 158 to move the ball detents 162 radially outward. As the ball detents 162 move radially outward a portion of each of the ball detents 162 enters a respective aperture 210 c defined in the outer tube 210 of the end effector 200 to secure the end effector 200 to the distal support tube portion 154 b of the endoscopic assembly 150. With the end effector 200 coupled to the endoscopic assembly 150, the button 130 is moved from the second position to the first position, as described above, such that slider 140 is prevented from actuation and such that trigger 114 is free to move.

In order to replace a spent end effector 200 with a new end effector 200, a user actuates or slides the slider 140 to release the spent end effector 200, decouples the end effector 200 from the endoscopic assembly 150, loads or connects a new end effector 200 to the endoscopic assembly 150 by fitting the proximal end portion 230 a of the inner tube 230 over the coupling member 158 c of the endoscopic assembly 150, and releases the slider 140 to retain the new end effector 200 on the endoscopic assembly 150. Since the trigger 114 is in the fully un-actuated position with the loading of a new end effector 200, the timing system 123 is reset such that each full actuation of the trigger 114 results in the firing of a single anchor 240.

Turning now to FIG. 22 , a shipping wedge 300, in accordance with an embodiment of the present disclosure, is shown disposed over an end effector 200. The shipping wedge 300 is configured and dimensioned to releasably connect to the end effector 200, to inhibit premature rotation of the inner tube 230 of the end effector 200, and to facilitate proper loading of the end effector 200 to the endoscopic assembly 150 of the surgical tack applier 100.

The shipping wedge 300 includes an elongate body 310 extending along a longitudinal axis “A”. The elongate body 310 is tubular in shape and defines a lumen or channel 311 extending longitudinally therethrough. The channel 311 of the elongate body 310 has a diameter sufficient to releasably accommodate the end effector 200 therein and along. The elongate body 310 includes a proximal portion 310 a defining a circumferential wall 312 configured to extend completely around a proximal end 200 a of the end effector 200 and be axially aligned therewith. The elongate body 310 includes a distal portion 310 b that may extend longitudinally beyond a distal end 200 b of the end effector 200.

A handle or wing 320 is integrally formed with or secured to the elongate body 310. The wing 320 extends transversely from the elongate body 310 along a first transverse axis “B” that is orthogonal to the longitudinal axis “A” of the elongate body 310. The handle 320 may be utilized (e.g., gripped) by a user to load the end effector 200 onto the endoscopic assembly 150 and/or to remove the shipping wedge 300 from the end effector 200 once the end effector 200 is properly loaded onto the endoscopic assembly 150.

A pair of guard walls or rails 322 a, 322 b are also integrally formed with or secured to the elongated body 310. The pair of guard walls 322 a, 322 b extend transversely from the elongate body 310 along a second transverse axis “C” that is orthogonal to the first transverse axis “B” of the handle 320 as well as the longitudinal axis “B” of the elongate body 310. The pair of guard walls 322 a, 322 b is disposed in substantially parallel and spaced relation relative to each other, on opposed sides of an arm 330 disposed therebetween.

As shown in FIGS. 23 and 24 , the arm 330 has a cantilever configuration including a first or distal end 330 a coupled to a side wall 314 of the elongate body 310 and a second or proximal end 330 b that is free to move laterally with respect to the side wall 314. The arm 330 is biased to extend within a slot 313 defined in the side wall 314. The arm 330 may be integrally formed with the side wall 314 of the elongate body 310 by cutting the slot 313 in a generally U-shape or, alternatively, the arm 330 may be secured to the side wall 314 of the elongate body 310 and positioned within the slot 313 having, for example, a rectangular shape. It is envisioned that the geometry of the slot 313 may vary and be configured to accommodate the arm 330 therein.

A projection 332 extends from an inner surface 330 c of the arm 330 adjacent the proximal end 330 b of the arm 330. The projection 332 includes a first surface 332 a and a cam ramp 332 b. As shown in FIGS. 24 and 25 , the projection 332 extends into the channel 311 of the elongate body 310 along an axis that is aligned with or parallel to the second transverse axis “Z” of the pair of guard walls 322 a, 322 b. The first surface 332 a of the projection 332 extends laterally into the channel 311 and the cam ramp 332 b tapers from the first surface 332 a of the projection 332 distally towards the inner surface 330 c of the arm 330. The projection 332 is configured and dimensioned for insertion into an aperture 210 d (see also, FIG. 18 ) defined in the outer tube 210 of the end effector 200.

When the shipping wedge 300 is attached to the end effector 200, the projection 332 extends in close proximity to or in contact with the proximal end portion 230 a (see e.g., FIG. 19 ) of the inner tube 230 of the end effector 200. By extending this amount, the projection 332 inhibits rotation of the inner tube 230 relative to the outer tube 210 by blocking or contacting the proximal end portion 230 a of the inner tube 230 if the inner tube 230 experiences any rotation relative to the outer tube 210. The first surface 332 a of the projection 332 further ensures simultaneous advancement of the end effector 200 with the shipping wedge 300 by inhibiting advancement of the shipping wedge 300 relative to the end effector 200 during assembly of the end effector 200 onto the endoscopic assembly 150 of the surgical tack applier 100. The cam ramp 332 b of the projection 332 enables the arm 330 to be deflected laterally outward and away from the end effector 200 upon proper loading of the end effector 200 to the endoscopic assembly 150 for removal of the shipping wedge 300 from the end effector 200, as described in further detail below.

The end effector 200, with the shipping wedge 300 installed thereon as shown, for example in FIG. 22 , is loaded onto the endoscopic assembly 150 of the surgical tack applier 100 (see e.g., FIG. 1 ) by first preparing the surgical tack applier 100 for receipt of the end effector 200 by moving the slider 140 from the first position to the second position, as described above, to urge the inner shaft assembly 158, and thus the coupling member 158 c, proximally from the first position to the second position as shown, for example, in FIGS. 15 and 16 . As the coupling member 158 c is moved from the first position to the second position, the ball detents 162 drop or move radially inward of the outer tube 152 as the outer camming surface/relief 158 c ₁ of the coupling member 158 c is moved into axial registration with the ball detents 162 so that the end effector 200 may be fully coupled to the distal support tube portion 154 b of the endoscopic assembly 150.

The end effector 200 with attached shipping wedge 300 is then advanced over the endoscopic assembly 150 such that the distal support tube portion 154 b of the endoscopic assembly 150 is received within the outer tube 210 of the end effector 200 with the key 154 d (FIG. 18 ) of the outer support tube assembly 154 positioned within the proximal key slot 210 b of the outer tube 210 of the end effector 200. With the end effector 200 fully coupled to distal support tube portion 154 b of the endoscopic assembly 150, the slider 140 is moved from the second position to the first position, as described above, to secure or lock the end effector 200 to the distal support tube portion 154 b of the endoscopic assembly 150. In particular, as the slider 140 is moved to the first position, the inner shaft assembly 158, and in turn the coupling member 158 c thereof, is moved distally from the second position to the first position. As the coupling member 158 c is moved from the second position to the first position, the ball detents 162 are urged by the outer camming surface/relief 158 c ₁ of the coupling member 158 to move the ball detents 162 radially outward as shown, for example, in FIGS. 13 and 14 . As the ball detents 162 move radially outward a portion of each of the ball detents 162 enters the respective aperture 210 c defined in the outer tube 210 of the end effector 200 to secure the end effector 200 to the distal support tube portion 154 b of the endoscopic assembly 150.

The shipping wedge 300 fully encompasses the end effector 200 to prevent a user from forcing the end effector 200 onto the surgical tack applier 100 during installation thereof. The circumferential wall 312 of the elongate body 310 of the shipping wedge 300 prevents or minimizes deformation of the outer tube 210 of the end effector 200 during the installation onto the endoscopic assembly 150 (e.g., by preventing a user's ability to force the end effector 200 onto the endoscopic assembly 150 which may result in premature separate of the end effector 200 from the surgical tack applier 100). Under the retention force of a properly loaded end effector 200, the arm 330 of the shipping wedge 300 will flex or be deflected away from the end effector 200 via the cam ramp 332 b of the protrusion 332 so that the shipping wedge 300 can be removed from the end effector 200 by sliding the shipping wedge 300 linearly along and away from the end effector 200.

The shipping wedge 300 ensures proper loading of the end effector 200 onto the endoscopic assembly 150 of the surgical tack applier 100 as the shipping wedge 300 will only separate from the end effector 200 when properly loaded onto the endoscopic assembly 150. The shipping wedge 300 will not separate from the end effector 200 until a force is reach that is less than a force it takes to remove a properly loaded end effector 200 from the endoscopic assembly 150 but greater than a force it takes to remove the end effector 200 from the endoscopic assembly 150 when the ball detents 162 are not fully/properly engaged. This configuration eliminates a false position that the end effector 200 is properly engaged with the endoscopic assembly 150 by, for example, preventing a user from forcing the end effector 200 onto the endoscopic assembly 150 improperly and/or preventing the shipping wedge 300 from being removed from the end effector 200 if the ball detents 162 are not properly and fully engaged with the end effector 200.

With reference now to FIG. 26 , a shipping wedge 400, in accordance with another embodiment of the present disclosure, is shown. The shipping wedge 400 is configured and dimensioned to releasably connect to an end effector 200, as shown in FIG. 27 , and to facilitate loading of the end effector 200 to the endoscopic assembly 150 of the surgical tack applier 100 while inhibiting premature actuation of the end effector 200.

As shown in FIGS. 26 and 27 , the shipping wedge 400 includes an elongate body 410 extending along a longitudinal axis “Y”. The elongate body 410 includes a proximal portion 410 a and a distal portion 410 b, and defines a channel 411 extending longitudinally therethrough that is configured and dimensioned to receive and releasably retain the end effector 200 therein. A distal portion 411 b of the channel 411 defined in the distal portion 410 b of the elongate body 410 is substantially tubular in shape and extends completely around a distal portion 200 b of the end effector 200 to securely retain the end effector 200 therein. The distal portion 410 b of the elongate body 410 may include side cut outs 412 to facilitate the formation of the channel 411 therein, or the distal portion 410 b of the elongate body 410 may be solid with the channel 411 formed by molding the elongate body 410 about a core pin. The distal portion 410 b of the elongate body 410 may extend longitudinally beyond the distal portion 200 b of the end effector 200 and have a closed end 410 c.

The proximal portion 410 a of the elongate body 410 includes first and second arms 414, 416 that extend proximally from the distal portion 410 b. The first arm 414 is biased to extend along an axis that is disposed at an angle with respect to the longitudinal axis “Y”, and the second arm 416 is biased to extend along an axis that is substantially parallel to the longitudinal axis “Y”. The first arm 414 includes a pair of fingers 414 a, 414 b extending towards the second arm 416. The pair of fingers 414 a, 414 b are disposed in parallel and spaced relation relative to each other and define a slot 414 c therebetween that is coincident with the channel 411 of the elongate body 410 and dimensioned to receive the end effector 200 therein. The second arm 416 includes a locking tab 418 secured thereto that extends towards the first arm 414 and into the slot 414 c defined between the pair of fingers 414 a, 414 b. The locking tab 418 extends along a transverse axis “Z” that is orthogonal to the longitudinal axis “Y”. The locking tab 418 is formed from a rigid material to prevent or minimize deflection away from the transverse axis “Z”.

The locking tab 418 is configured for positioning within the end effector 200 as shown in FIGS. 27 and 28 . The locking tab 418 extends through the aperture 210 d defined in the outer tube 210 of the end effector 200 and extends in close proximity to or in contact with the proximal end portion 230 a of the inner tube 230 of the end effector 200. By extending this amount, the locking tab 418 inhibits rotation of the inner tube 230 relative to the outer tube 210 by blocking or contacting the proximal end portion 230 a of the inner tube 230 if the inner tube 230 experiences any rotation relative to the outer tube 210.

The first and second arms 414, 416 are flexible so that the first arm 414 may be pressed towards the second arm 416, as shown in FIG. 29 . Upon pressing the first arm 414 toward the second arm 416, the first arm 414 is displaced and moves to a deflected position such that the first arm 414 extends along an axis substantially parallel to the longitudinal axis “Y” of the elongate body 410. The pair of fingers 414 a, 414 b of the first arm 414 contacts and acts on the second arm 416 by pushing the second arm 416 away from the end effector 200 such that the second arm 416 is displaced and moved to a deflected position that extends along an axis disposed at an angle with respect to the longitudinal axis “Y” of the elongate body 410. Movement of the second arm 416 to the deflected position causes the locking tab 418 to disengage from the end effector 200.

As shown in FIGS. 27 and 28 , the end effector 200, with the shipping wedge 400 installed thereon, is loaded onto the endoscopic assembly 150 of the surgical tack applier 100 without requiring the slider 140 (see e.g., FIG. 11 ) of the surgical tack applier 100 to be actuated (e.g., moved from the first position to the second position). The end effector 200, with the attached shipping wedge 400, is advanced over the endoscopic assembly 150 such that the distal tube portion 154 b of the endoscopic assembly 150 is received within the outer tube 210 of the end effector 200. As shown in FIG. 30 , as the end effector 200 is advanced towards the endoscopic assembly 150, the locking tab 418 of the shipping wedge 400 contacts the coupling member 158 c of the inner shaft assembly 158 of the endoscopic assembly 150 and moves the coupling member 158 c and thus, the inner shaft assembly 158 proximally from the first position to the second position. As the coupling member 158 c is moved from the first position to the second position, the ball detents 162 drop or move radially inward of the outer tube 152 thereby allowing the end effector 200 to be installed thereon. As the inner shaft assembly 158 is moved to the second position, the slider 140 is also moved from the first position to the second position.

Once the key 154 d (FIG. 18 ) of the outer support tube 154 is positioned within the proximal key slot 210 b of the outer tube 210 of the end effector 200 during insertion of the end effector 200 onto the endoscopic assembly 150, the first arm 414 is pressed towards the end effector 200 which, in turn, moves the second arm 416 away from the end effector 200 as shown in FIG. 31 . Movement of the second arm 416 away from the end effector 200 causes the locking tab 418 to disengage from the end effector 200. With the force of the locking tab 418 removed, the inner shaft assembly 158 and thus, the coupling member 158 c, of the endoscopic assembly 150 moves distally from the second position to the first position. As the coupling member 158 c is moved from the second position to the first position, the ball detents 162 are urged by the outer camming surface/relief 158 c ₁ of the coupling member 158 c to move the ball detents 162 radially outward such that a portion of each of the ball detents 162 enters the respective aperture 210 c defined in the outer tube 210 of the end effector 200 to secure the end effector 200 to the distal support tube portion 154 b of the endoscopic assembly 150. Accordingly, as the inner shaft assembly 158 is moved back to the first position, the slider 140, which may be biased in the first position as described above, is also moved back to the first position. With the end effector 200 loaded onto the endoscopic assembly 150, the shipping wedge 400 is removed from the end effector 200 by sliding the shipping wedge 400 linearly along and distally away from the end effector 200.

The shipping wedge 400 allows for the installation load to be distributed around the hand of the user and to the distal end 200 b of the end effector 200. The locking tab 418 prevents the inner shaft assembly 158 from connecting to the end effector 200 until displaced thereby preventing the inner tube 230 of the end effector 200 from spinning as well as the inner shaft assembly 158 of the endoscopic assembly 150 from spinning until the trigger 114 is pulled. Additionally, the locking tab 418 displaces the inner shaft assembly 158 linearly to release the ball detents 162 thereby allowing the end effector 200 to be installed onto the endoscopic assembly 150 without having to move the slider 140 manually. Accordingly, the slider 140 is actuated by a user only to remove an end effector 200 from the endoscopic assembly 150, as described above. As the slider 140 travels in an opposite direction as the removal of the end effector 200, it is more ergonomic to use the slider 140 for removal of the end effector 200 than for installation.

Turning now to FIG. 32 , a shipping wedge 500 in accordance with another embodiment of the present disclosure, is shown releasably disposed over an end effector 200. The shipping wedge 500 is substantially similar to the shipping wedge 400 and will be described with respect to the differences therebetween.

As shown in FIGS. 32 and 33 , the shipping wedge 500 includes an elongated body 510 extending along a longitudinal axis “Y”. The elongate body 510 includes a proximal portion 510 a and a distal portion 510 b, and defines a channel 511 extending longitudinally therethrough that is configured and dimensioned to receive and releasably retain the end effector 200 therein. The distal portion 510 b of the elongate body 510 defines a distal portion 511 b of the channel 511 that is substantially tubular in shape and extends completely around the distal portion 200 b of the end effector 200.

The proximal portion 510 a of the elongate body 510 includes at least one arm 514 extending proximally from the distal portion 510 b along an axis substantially parallel to the longitudinal axis “Y” of the elongate body 510. The arm 514 includes a proximal portion 514 a including a protuberance or latch 516 extending from an inner surface 514 c of the arm 514. The latch 516 includes a first surface 516 a and a cam ramp 516 b. The latch 516 extends into the channel 511 of the elongate body 510 with the first surface 516 a extending laterally into the channel 511 and the cam ramp 516 b tapering from the first surface 516 a proximally towards the inner surface 514 c of the arm 514. The latch 516 is configured and dimensioned to releasably engage a proximal end of the distal tube portion 154 b of the endoscopic assembly 150.

The arm 514 includes a distal portion 514 b including a slit 515 defined therethrough. A locking tab 518 is slidably disposed within the slit 515. The locking tab 518 includes a first end 518 a positionable within the channel 511 of the elongate body 510 and a second end 518 b positioned radially outward of the arm 514. The second end 518 b defines a pull tab that is engageable by a user to move the locking tab 518 from a first position in which the first end 518 a of the locking tab 518 is positioned within the channel 511 of the elongate body 510, as shown in FIG. 33 , and a second position in which the first end 518 a of the locking tab 518 is moved into the slit 515 defined in the arm 514, as shown in FIG. 34 .

The locking tab 518 is configured for positioning within the end effector 200 as shown in FIGS. 32 and 33 . The locking tab 518 extends through the aperture 210 d defined in the outer tube 210 of the end effector 200 and extends in close proximity to or in contact with the proximal end portion 230 a of the inner tube 230 of the end effector 200. The end effector 200, with the shipping wedge 500 installed thereon, is loaded onto the endoscopic assembly 150 in a similar manner as discussed above with regard to the shipping wedge 400, except that the end effector 200 is advanced over the endoscopic assembly 150 until the latch 516 of the arm 514 of the shipping wedge 500 engages the endoscopic assembly 150.

Once the end effector 200 is fully inserted onto the endoscopic assembly 150, the second end 518 b of the locking tab 518 is pulled by a user to remove the first end 518 a of the locking tab 518 from within the end effector 200, as shown in FIG. 34 , to secure the end effector 200 to the endoscopic assembly 150, as described above with regard to the shipping wedge 400. Pulling on the locking tab 518 causes the arm 514 of the shipping wedge 500 to flex or be deflected laterally away from the end effector 200 which releases the latch 516 so that the shipping wedge 500 can be removed from the end effector 200 by sliding the shipping wedge 500 linearly along and distally away from the end effector 200.

Persons skilled in the art will understand that the structures and methods specifically described herein and shown in the accompanying figures are non-limiting exemplary embodiments, and that the description, disclosure, and figures should be construed merely as exemplary of particular embodiments. It is to be understood, therefore, that the present disclosure is not limited to the precise embodiments described, and that various other changes and modifications may be effected by one skilled in the art without departing from the scope or spirit of the disclosure. Additionally, the elements and features shown or described in connection with certain embodiments may be combined with the elements and features of certain other embodiments without departing from the scope of the present disclosure, and that such modifications and variations are also included within the scope of the present disclosure. Accordingly, the subject matter of the present disclosure is not limited by what has been particularly shown and described. 

What is claimed is:
 1. A shipping wedge comprising: an elongate body extending along a longitudinal axis and defining a channel therethrough, the elongate body including a proximal portion and a distal portion, the proximal portion including a first arm and a second arm extending proximally from the distal portion, the first arm including a pair of fingers extending towards the second arm, the pair of fingers disposed in spaced relation relative to each other and defining a slot therebetween; and a locking tab extending outwardly from the second arm and into the slot of the first arm and the channel of the elongate body.
 2. The shipping wedge according to claim 1, wherein the second arm is disposed in spaced relation relative to the first arm.
 3. The shipping wedge according to claim 1, wherein the locking tab is secured to the second arm.
 4. The shipping wedge according to claim 1, wherein the first arm is biased to extend along an axis that is disposed at an angle with respect to the longitudinal axis of the elongate body and the second arm is biased to extend along an axis that is substantially parallel to the longitudinal axis, the first arm movable to a deflected position extending along an axis substantially parallel to the longitudinal axis.
 5. The shipping wedge according to claim 1, wherein the pair of fingers extends laterally towards the second arm.
 6. The shipping wedge according to claim 4, wherein when the first arm is disposed in the deflected position, the pair of fingers press against and move the second arm to a deflected position extending along an axis that is disposed at an angle with respect to the longitudinal axis.
 7. The shipping wedge according to claim 1, wherein the distal portion of the elongate body has a closed distal end.
 8. The shipping wedge according to claim 1, wherein a distal portion of the channel defined in the distal portion of the elongate body is substantially tubular in shape.
 9. The shipping wedge according to claim 1, wherein the distal portion of the elongate body includes side cut-outs.
 10. An assembly comprising: the shipping wedge of claim 1; and an end effector including an outer tube having proximal and distal ends and an inner tube disposed within the outer tube, the inner tube rotatable relative to the outer tube, wherein the shipping wedge is removably installed on the end effector with the end effector received within the channel of the shipping wedge.
 11. The assembly according to claim 10, wherein the distal portion of the elongate body of the shipping wedge extends longitudinally beyond the distal end of the end effector.
 12. The assembly according to claim 10, wherein the outer tube of the end effector defines an aperture therethrough and the locking tab of the shipping wedge extends through the aperture of the outer tube and into contact with a proximal end portion of the inner tube to inhibit rotation of the inner tube relative to the outer tube.
 13. The shipping wedge according to claim 1, wherein the pair of fingers is disposed at a proximal end of the first arm.
 14. A shipping wedge comprising: an elongate body including a distal portion; a first arm extending proximally from the distal portion; and a second arm extending proximally from the distal portion, the elongate body defining a channel extending through the distal portion and between the first and second arms, the channel extending along a longitudinal axis defined through the elongate body, the second arm including a locking tab extending outwardly therefrom and into the channel of the elongate body.
 15. The shipping wedge according to claim 14, wherein each of the first and second arms has a biased position, wherein when the first arm is deflected from the biased position of the first arm towards the longitudinal axis of the elongate body, the second arm is deflected from the biased position of the second arm away from the longitudinal axis of the elongate body by the first arm.
 16. The shipping wedge according to claim 14, wherein the first arm includes a pair of fingers extending towards the second arm, the pair of fingers disposed in spaced relation relative to each other and defining a slot therebetween.
 17. The shipping wedge according to claim 16, wherein the locking tab extends into the slot defined between the pair of fingers of the first arm.
 18. An assembly comprising: the shipping wedge of claim 14; and an end effector including an outer tube having proximal and distal ends and an inner tube disposed within the outer tube, the inner tube rotatable relative to the outer tube, wherein the shipping wedge is removably installed on the end effector with the end effector received within the channel of the shipping wedge.
 19. The assembly according to claim 18, wherein the distal portion of the elongate body of the shipping wedge extends longitudinally beyond the distal end of the end effector.
 20. The assembly according to claim 18, wherein the outer tube of the end effector defines an aperture therethrough and the locking tab of the shipping wedge extends through the aperture of the outer tube and into contact with a proximal end portion of the inner tube to inhibit rotation of the inner tube relative to the outer tube. 